CTX409 - Car stereo AIWA - Free user manual and instructions

Technical specifications	AIWA CTX409 car radio with CD player, AM/FM, AUX and USB input
Output power	4 x 50 Watts
Supported audio formats	MP3, WMA
Display	Backlit LCD screen
Additional features	Support for digital radio stations, 5-band equalizer
Usage	Easy installation in most vehicles, intuitive controls
Maintenance	Regular cleaning of the front panel and connectors, software updates if available
Safety	Protection against surges and short circuits, safety lock
General information	Standard dimensions for dashboard mounting, compatible with most vehicles

Frequently Asked Questions - CTX409 AIWA

How do I turn on the AIWA CTX409 car radio?

To turn on the car radio, press the power button located on the front panel of the device.

How do I adjust the volume on the AIWA CTX409 car radio?

Use the volume knob located on the front panel to increase or decrease the volume. Turn it to the right to increase the volume and to the left to decrease it.

How do I connect my phone via Bluetooth to the AIWA CTX409 car radio?

Enable Bluetooth on your phone and search for available devices. Select 'AIWA CTX409' from the list of devices to establish the connection.

Why does the car radio not pick up radio stations?

Check if the car radio antenna is properly installed. Also, make sure you are in an area with good radio coverage.

How do I change the audio source on the AIWA CTX409 car radio?

Press the 'Source' button to cycle through the available audio sources, such as FM, AM, Bluetooth, or USB.

How do I reset the AIWA CTX409 car radio?

To reset the car radio, press the reset button located on the back of the device with a pointed object, like a pen, for a few seconds.

The AIWA CTX409 car radio does not turn on, what should I do?

Check that the car radio is properly wired and that the power cable is connected to a working power source. Also, make sure the fuse is not blown.

How do I update the firmware of the AIWA CTX409 car radio?

Visit the AIWA website to download the latest firmware version and follow the provided instructions for installation via USB.

How do I listen to music from a USB stick on the AIWA CTX409 car radio?

Insert your USB stick containing audio files into the car radio's USB port. Then select 'USB' as the audio source to start listening.

The AIWA CTX409 car radio displays an error message, what should I do?

Refer to the user manual for the specific error code. Generally, you can try resetting the device or checking the connections.

How do I adjust the equalizer on the AIWA CTX409 car radio?

Access the audio settings in the car radio menu, then select the equalizer to adjust the bass, midrange, and treble levels according to your preferences.

USER MANUAL CTX409 AIWA

For your convenience, record the model number and serial number (you will find them on the right side of your set) in the space provided below. Please refer to them when you contact your AIWA dealer in case of difficulty.

Model No. CT-X409

Serial No.

Welcome

Thank you for your purchasing this AIWA product. To optimize the performance of this unit, please read through this manual carefully.

In addition to this operating instructions manual, be sure to refer to the separate installation and connections manuals as well.

PRECAUTIONS

• This unit is designed to be operated on a 12-volt DC negative-ground electrical system only.
  • To prevent short-circuiting, disconnect the negative car battery terminal until the unit has been mounted and connected completely.
• When replacing the fuse, be sure to use one whose amperage rating is identical. Use of a fuse of higher amperage may cause serious damage to the unit.
• Keep screwdrivers, etc. and other metallic or magnetic objects away from the playback head.
• When your car was parked in direct sunlight resulting in a considerable rise in temperature inside the car, allow the unit to cool off before operating it.
• Keep the volume at such a level that you can hear outside warning sounds (horns, sirens, etc.).

Notes on cassettes

Do NOT expose cassettes to direct sunlight, extremely high or cold temperature or moisture. Keep cassettes away from equipment with built-in magnets to avoid unwanted noise or loss of sound quality.

Do NOT touch the tape of a cassette, as any dirt or dust will contaminate the heads.

Be sure to remove any cassette from the unit if you are not using it.

NOTE

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

— Reorient or relocate the receiving antenna.
— Increase the separation between the equipment and receiver.
— Connect the equipment into an outlet on circuit different from that to which the receiver is connected.
— Consult the dealer or an experienced radio/TV technician for help.

CAUTION

Modifications or adjustments to this product, which are not expressly approved by the manufacturer, may void the user's right or authority to operate this product.

Caution on the transit protection pad

The unit is shipped with a transit protection pad in the cassette compartment.

Be sure to press EJECT ▲ to remove the pad before operating the unit.

Technical line drawing of a mechanical component with internal parts and a pointer (no text or symbols)

Transit protection pad

TABLE OF CONTENTS

FRONT PANEL 3

DETACHING AND ATTACHING THE FRONT PANEL 4

SETTING THE BEEP TONE 5

SETTING THE CLOCK 5

RADIO OPERATION 6

PRESETTING STATIONS 7

MY INFORMATION SWITCH 8

TAPE PLAYBACK 10

SOUND ADJUSTMENTS 11

CONNECTING A PORTABLE CD/MD PLAYER OR OTHER EQUIPMENT 12

MAINTENANCE 13

SPECIFICATIONS 13

This unit can be operated using the AIWA RC-SW1 or RC-CD1 remote control (sold separately).

FRONT PANEL

1 2 3 4 5 6 7 8 9 10 11 12 BARS H-BASS SELECT DIRECTION TAPE NOTE DAND A.M.E. TUNE CDMD IN DISP LO COMD IN COMD IN MY INFO 13 14 15 16 17 18 19

Display window

20 21 22 23 24 25 26 27 FM1 AM ST LO MY INFO FM2 PM CH HBASS 28 29

① +/− (audio control) button
② SEL (select) button
③ H-BASS button
④ EJECT ▲ button
⑤ Cassette compartment
⑥ DIRECTION ◀◀/▶▶ button
⑦ BAND button
⑧ TAPE button
⑨ MUTE button
⑩ A.ME (auto memory/preset scan) button
⑪ (release) button
⑫ TUNE ▼/▲ buttons
⑬ CD/MD IN jack (3.5-mm dia.)
⑭ PWR (power on/off) button
⑮ Preset station buttons 1 - 6

⑯ DISP (display) button
⑰ LO (local/DX) button
⑱ MY INFO (my information) button
⑲ CD/MD IN button
⑳ Band indicator
②1 AM/PM indicator
② Main display section
⑳ ST (stereo) indicator
⑳ Subdisplay section
⑳LO (local) indicator
⑳ MY INFO (my information) indicator
⑳ (tape direction) indicators
⑳ Audio control indicator
⑲ H BASS indicator

DETACHING AND ATTACHING THE FRONT PANEL

1 2 3 4 5 6 7 8 9 10 TUR MUT RAND A.ME TUR COND IN DISP LO NO

You can detach the front panel from the unit and carry it with you when you leave your car unattended.

When you carry the front panel out of your car, use the supplied carrying case.

Before detaching the front panel, remove the cassette to prevent possible damage to the unit.

1 Press PWR to turn the unit off.
2 While supporting the front panel with one hand, press ± to release one side of the panel. Care must be taken not to drop the panel. It may suddenly eject at this point.
3 When the front panel is lifted from the unit, remove it by pulling it away from the unit.

Technical line drawing of a device rear panel with internal components (no text or symbols)

Do NOT touch the connector on the reverse side of the front panel, as doing so may contaminate the connector and cause a poor connection resulting in a malfunction.

Attaching the front panel

Technical diagram of a device rear panel with labeled components and directional arrows indicating movement or flow.

Security Lamp

When the front panel is detached, you can find an LED lamp on the front side of the unit. This lamp is designed to deter theft, and continues to flash when the front panel is detached. This unit is not equipped with any other security systems such as a security alarm, so there are limitations to its effectiveness.

LED lamp

SETTING THE BEEP TONE

The unit is preset at the factory to beep each time you press any button on the front panel except ↑, ▲, ◀◀ and ▶▶. You can stop beeping by following the procedure below.

1 2 3 4 5 6 7 8 9 10 1 4

1 With the unit off, press 1 and 4 at the same time.

The "BEEP" indication appears.

Each time you press them, this function turns on or off.

The beep function is activated when the "BEEP" indication appears with the audio control indicator lighting up and canceled without the indicator.

EEP

Audio control indicator

SETTING THE CLOCK

3 TAPE MUTE BAND A-NO CLOUD IN DRIP LO 1 2,4

1 Press PWR to turn the unit on.

2 Press and hold DISP for more than 2 seconds until the clock indication flashes.

If you do not proceed with step 3 within 5 seconds, the clock indication disappears.

AM-12:00

3 Press TUNE ▼ to set the hour.

Press TUNE ▲ to set the minute.

4 Press DISP to start working the clock from 0 second.

Having the clock displayed while in Radio or Tape Play mode

Press DISP. The clock display appears for 5 seconds, then the unit returns to its former display.

RADIO OPERATION

4 2 1 3

1 Press PWR to turn the unit on.

The radio frequency appears.

2 Press BAND to select the band from among FM1, FM2, FM3 and AM.

The band indicators appear cyclically in order. (FM1, FM2 and FM3 share the same frequency range.)

Band indicator Frequency indication FM1 100.1

3 Press (more than 2 seconds) either TUNE▼ or TUNE ▲ to tune in the desired station.

The unit starts scanning and tunes in a station automatically (seek tuning).

Press TUNE ▼ to decrease and TUNE ▲ to increase the frequency.

Press the button again to cancel seek tuning. Repeat the procedure until the desired station is tuned in.

Note

If you press (less than 0.5 second at a time) either TUNE ▼ or TUNE ▲, the frequency decreases or increases step by step.

4 Adjust the volume with +/-.

BAND TAPE CD/MD IN PWR TUNE▼/▲ LO

To turn the unit off

Press PWR.

Note

The unit turns on in the last selected mode when you turned off the unit with the exceptions of pressing the following buttons.

• Pressing TAPE turns on the unit in Tape Play mode.
• Pressing BAND turns on the unit in Radio mode.
• Pressing CD/MD IN turns on the unit in CD/MD IN mode.

Switching modes

When the unit is in Radio mode, inserting a cassette switches the unit to Tape Play mode automatically.

LO (local/DX) button

You can use Local mode when you wish to tune in only strong stations during seek tuning. In Radio mode, press LO to select Local mode. The "LO" indicator lights up.

• Press LO to deactivate Local mode and switch to DX (distance) mode.
• The "ST" (stereo) indicator lights up when the tuned-in station is broadcasting in stereo and the reception is good.

PRESETTING STATIONS

To preset stations automatically (auto memory)

1 2

1 Press BAND to select a desired band from among FM1, FM2, FM3 and AM.

FM1 100.1

2 Press and hold A.ME for more than 2 seconds to activate the automatic presetting function.

The six strongest available stations will be stored in memory on the preset station buttons 1 to 6 in order of their signal strength.

Use this function to automatically preset up to 6 stations each for FM1, FM2, FM3 and AM (up to a total of 24 stations).

• When auto memory is completed, the station stored in 1CH is tuned in.
  • To stop auto memory, press A.ME again.

To check the preset stations (preset scan)

• If you wish to check the preset stations, press A.ME for less than 2 seconds. The preset stations stored in memory will be tuned in for 5 seconds each in order.
• To stop this function, press A.ME again or press any of the preset station buttons 1 to 6.

To preset stations manually

You can manually preset stations that have not been selected by auto memory.

2 3 1 2 3 ADD SEL FWD SPE MUE A-AC COND DISP LO

1 Press BAND to select the band from among FM1, FM2, FM3 and AM.
2 Tune in the station that you wish to preset with TUNE ▼ or TUNEA.
3 Press one of the preset station buttons 1 to 6 for approximately 2 seconds.
The number of the pressed preset station button appears next to the frequency indication.

FM2 100.1 3CH Preset number

Repeat these procedures to preset up to 6 stations each for FM1, FM2, FM3 and AM.

- If you try to preset a station on a preset station button on which another station of the same band has already been preset, the previously preset station will be erased.

To tune in the preset stations

1 2

1 Press BAND to select a desired band from among FM1, FM2, FM3 and AM.
2 Press the desired preset station button. The number of the pressed preset station button is displayed next to the frequency indication.

Active tuning reception control (ATRC)

This unit automatically suppresses FM noise caused by varying signal strength resulting from movement of the car.

• The built-in automatic blending circuit mixes the left and right channel signals according to the strength of the reception. At the same time, the high-cut circuit activates to maintain the sound quality.
• If the reception becomes even weaker, the unit automatically switches to Monaural mode to reduce noise.

MY INFORMATION SWITCH

You can timer-activate the radio for a daily radio program. The unit turns on and off in Radio mode at the preset time automatically.

Setting the timer

2 3 1 2 3 SHEE GASS TARE MUTT PWR AIR DISCU A.M.P. LPGND IN DISP LD HV RPU

1 With the unit off, press and hold MY INFO for more than 2 seconds.

The "PO" indication flashes in the display window.

P0

2 Press SEL.

Timer indication flashes.

AM-12:00

3 Set the time you wish the unit to turn on in Radio mode.

Press TUNE▼ to set the hour.

Press TUNE▲ to set the minute.

MY INFORMATION SWITCH

4,7 6,8 5 9

4 Press SEL.

Radio indication flashes.

Band indicator

FM1 105.1

5 Press BAND to select the band.

6 Tune in the station that you wish to preset with TUNE ▼ or TUNE ▲.

7 Press SEL.

Timer indication flashes.

PM 3:30

8 Set the time you wish the unit to turn off.

Press TUNE ▼ to set the hour.

Press TUNE ▲ to set the minute.

9 Press and hold MY INFO for more than 2 seconds.

Your setting is stored in memory and the unit turns off.

Activating the timer

BAND TAPE CD/MD IN 1

1 With the unit on, press MY INFO.

The "MY INFO" indicator lights up and the timer is activated.

To cancel the timer

Press MY INFO again so that the "MY INFO" indicator disappears.

To check the setting

With the unit off, press MY INFO.

The turn-on time, followed by the radio frequency and the turn-off time, appears in the display window each for 1 second, then the unit turns off.

Notes

• Even if the unit is in a mode other than Radio mode, the unit switches to Radio mode and tunes in the preset radio program at the preset time automatically.
• Even if you are listening to a radio program with this function, pressing the following buttons switches the unit to other mode:

— Pressing BAND changes the unit to Radio mode.
— Pressing TAPE changes the unit to Tape Play mode.
— Pressing CD/MD IN changes the unit to CD/MD IN mode.

If you switch modes with these buttons, the unit does not turn off at the turn-off time of the timer.

TAPE PLAYBACK

2 1 LAST BAND MATT SALAD SELECT PWR BARD A.M.E. TIME CORN IN DISP LO 30Hz

1 Insert a cassette to start playback. If a cassette is already inserted, press TAPE to start playback.

Technical line drawing of a mechanical component with internal ports and a directional arrow (no text or symbols)

Playback starts in the direction that the unit played back previously.

TAPE

2 Adjust the volume with +/-.

Press the following buttons to operate tape transport.

To do this	Press this button
Eject the cassette*
Change the playback side
Fast-forward upper side of the tape
Rewind lower side of the tape
Rewind upper side of the tape
Fast-forward lower side of the tape
Stop fast winding and resume playback

* When you eject the cassette, the unit switches to Radio mode.
** Do not press 📄 or 📋 all the way. Doing so may change the direction of tape transport.

Auto reverse function

When the end of the tape is reached during playback or fast tape transport, the direction of the tape is automatically reversed, and playback starts again.

Tape direction indications

	Playback	Fast-forward or rewind
Upper side
Lower side

TAPE PLAYBACK

Before turning the ignition off

Be sure to eject any cassette from the unit before turning the ignition off. Otherwise, the unit may be damaged when you detach the front panel.

Switching modes

When the unit is in Radio mode, inserting a cassette switches the unit to Tape Play mode automatically.

To prevent tape problems

Before inserting a cassette into the unit, make sure that there is no slack in the tape. If necessary, take up the slack by inserting a pencil into the spindle hole and winding.

90-minute or longer tapes are extremely thin and easily deformed or damaged. They are no recommended.

Illustration of hands using a power tool to adjust or install a cassette tape (no text or symbols visible)

SOUND ADJUSTMENTS

2 1 MUTE TAP SAND ABS COLD DISP LO HPO

1 Press SEL to select the mode that you wish to adjust from: VOL (volume), BAS (bass), TRE (treble), BAL (balance) and FAD (fader).

The following indications appear in cyclic order.

If you do not proceed with step 2 within 5 seconds, the selected mode is canceled, and the indication returns to the current source mode.

2 Press +/- to adjust the level.

Press and hold either button to change the level rapidly.

Adjust each mode referring to the audio control indicators in the display window (see page 3).

	-	+
UOL	Decreases the volume level	Increases the volume level
BAS	Decreases the bass level	Increases the bass level
TRE	Decreases the treble level	Increases the treble level
BAL	Decreases the level of the right speaker(s)	Decreases the level of the left speaker(s)
FAI	Decreases the level of the front speakers	Decreases the level of the rear speakers

Without selecting any mode with SEL, only the volume level can be adjusted by pressing +/-.

MUTE button

Press this button to temporarily lower the volume.

Press it again to restore the previous volume.

H-BASS (High BASS)

You can enjoy music with strong bass sound.

H-BASS SEL PWR TARE MUTE BAND A.ME TUM COND LO DISP LO

Press H-BASS to obtain powerful bass.

The "HBASS" indicator lights up.

Each time you press H-BASS, this function turns on or off.

CONNECTING A PORTABLE CD/MD PLAYER OR OTHER EQUIPMENT

This unit is equipped with the line-level input (CD/MD IN) jack enabling high quality of the sound.

1 2 3 4

1 If a cassette is inserted, remove it to prevent possible damage to the unit.
2 Connect a portable CD/MD player, etc. via the CD/MD IN jack (3.5-mm dia.) on the unit.
3 Press PWR to turn the unit on.
4 Press CD/MD IN to listen to the connected equipment.

The "CD" indication appears.

- For further information on the connected equipment, refer to the operating instructions for the equipment.

Note

Be sure to press CD/MD IN after you connect a portable CD/MD player, etc. to the CD/MD IN jack to listen using the connected equipment.

Even if equipment is connected to the CD/MD IN jack, you cannot listen using the connected equipment without switching the unit to CD/MD IN mode by pressing CD/MD IN.

MAINTENANCE

Cleaning the front panel

When the front panel is soiled, wipe the surface of the panel with a dry and soft cloth.

Cleaning the tape head

Use a cleaning cassette to clean the playback head and capstans approximately once a month. If the playback head is dirty, the high tones may not be reproduced properly.

Cleaning the connector

The connector on the reverse side of the front panel needs to be cleaned occasionally. Wipe the surface of the connector with a cotton swab slightly moistened with alcohol.

Diagram of a device showing a cable inserted into a port with an arrow pointing to the cable (no text or symbols present)

SPECIFICATIONS

RADIO SECTION

(FM)

Frequency Range: 87.5 MHz–108 MHz

(100-kHz steps)

87.5 MHz-108 MHz

(50-kHz steps)

Usable Sensitivity: 12.7dBf

50 dB Quieting Sensitivity:

17.2 dBf

IF Rejection: 80 dB

Frequency Response: 30 Hz–15,000 Hz

S/N Ratio: 63 dB

Stereo Separation: 35 dB at 1 kHz

Alternate Channel Selectivity:

70 dB

Capture Ratio: 3 dB

(AM (MW))

Frequency Range: 530 kHz–1,710 kHz

(10-kHz steps)

522 kHz–1,620 kHz

(9-kHz steps)

Usable Sensitivity: 30 μV (30 dB)

TAPE SECTION

Tape Speed: 4.8 cm/sec. (1 7/8 ips)

S/N Ratio: 50 dB

Frequency Response: 40 Hz–14,000 Hz

Stereo Separation: 40 dB

FF/REW Time: 190 sec. (C-60)

AUDIO SECTION

Max. Power Output: 35 W × 4 channels

CD/MD IN input

Input sensitivity (load impedance)

CD/MD IN: 500 mV (10 kΩ)

GENERAL

Power-Supply Voltage:

14.4 V (11 to 16 V allowable),

DC, negative ground

Load Impedance: 4 Ω

Tone Control: Bass ± 10 dB at 100 Hz

Treble ± 10 dB at 10 kHz

Preamp Output Voltage (load impedance):

2.2 V (10 kΩ)

Installation size: 182 (W) × 53 (H) ×

155 (D) mm

(7 1/4 (W) × 2 1/8 (H) ×

6 1/8 (D) inches)

Accessory supplied: Carrying case (1)

- Specifications and external appearance are subject to change without notice due to product improvement.

Bienvenidos

Technical line drawing of a mechanical component with internal cavities and a central pin (no text or symbols)

Technical line drawing of a device rear panel with internal components (no text or symbols)

Technical diagram of a device rear panel with labeled components and directional arrows indicating movement or flow.

Luz de seguridad

4 2 3 1 2 3 DIP MIPS MIPS SEL VSP DISP LO A.MI COND H 2 V 0 4 V 5

2 3 1 2 3 SASS SOS PWR TAFE BUTS DARO ARE CORN IN DISP LO 4/5 1

BAND TAPE CD/MD IN 1

Technical line drawing of a mechanical component with internal ports and a directional arrow (no text or symbols)

Illustration of hands using a handheld device to switch a component (no text or symbols visible)

AJUSTES DEL SONIDO

2 1 MUTE HOLD RANGE SWEI MUTE HOLD RANGE SWEI HOLD COMP IN DISP LO HY NFO

H-BASS (graves altos)

Diagram of a device showing a cable inserted into a labeled component (no text or symbols present)

ESPECIFICACIONES

SECCION DE LA RADIO

(FM)

Technical line drawing of a mechanical component with internal ports and a central pin (no text or symbols)

Bourrelet de protection

TABLE DES MATIERES

PANNEAU AVANT 3

DETACHEMENT ET FIXATION DU PANNEAU AVANT 4

Technical line drawing of a device rear panel with ports and connectors (no text or symbols)

Technical diagram of a device rear panel with labeled components and directional arrows indicating movement or flow.

Témoin de sécurité

BAND TAPE CD/MD IN 1

Technical line drawing of a mechanical component with internal ports and a directional arrow (no text or symbols)

Line drawing of hands using a handheld device to adjust or install a cassette tape (no text or symbols visible)

AJUSTEMENTS DU SON

2 1 MUTE TARE BAND CANO DISP LO R/WG

Simple line drawing of a device with an attached port and cable (no text or symbols)

SPECIFICATIONS

SECTION RADIO

(FM)

4,8 cm/sec. (17/8 ips)

Rapport signal/bruit: 50 dB